Paper Push: 2026-06-17
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每日论文推送：BGC-Argo、海色/海洋光学、海洋热浪与碳泵Daily Paper Push: BGC-Argo, ocean colour/ocean optics, marine heatwaves and carbon pump
本期由 GitHub Actions 自动检索生成：Nature/Science 系列优先，其次是用户指定重点期刊，再补充重点关注团队的新论文，最后纳入其他相关期刊；历史去重后保留 5 篇，不超过每日 50 篇上限。 This issue was generated automatically by GitHub Actions: Nature and Science series first, then the user-defined priority journals, then new papers from the focused team, followed by other relevant journals as topical supplements. After deduplication, 5 papers remain, below the daily limit of 50.
Download Word summary
无 mechanism sketch 图。今天的意大利语卡片： No mechanism sketch figure today. Daily Italian card:
每日一句意大利语Daily Italian
Ahi serva Italia, di dolore ostello.
Dante, Commedia, Purgatorio VI, 76; Italian original from Kalliope
这是但丁对意大利政治分裂的痛切感叹，意思近于“唉，受奴役的意大利，痛苦的居所”。
This is Dante's bitter lament over political division in Italy, calling the country a dwelling place of sorrow.
趋势总结Trend Summary
本期重点关注 BGC-Argo、海色遥感/海洋光学、海洋热浪、浮游植物垂向结构和碳泵过程。筛选逻辑不再只限于重点期刊；当高影响力期刊当天新增较少时，会额外检索重点关注团队作者的新论文，并用海洋、海色/光学和碳循环关键词过滤，再从其他相关期刊补充候选论文。
This issue focuses on BGC-Argo, ocean-colour remote sensing, ocean optics, marine heatwaves, vertical phytoplankton structure and carbon-pump processes. The selection is no longer limited to priority journals; when few high-impact papers are newly available, the workflow also checks focused-team authors and filters those papers with ocean, ocean-colour/optics, and carbon-cycle keywords before adding other relevant journals as supplements.
重点期刊：按影响力和相关性排序Key journals: ordered by impact and relevance
1. A global re-assessment of surface bio-optical properties in Case 1 waters using Biogeochemical-Argo profiles
作者Authors: Mengyu Li; Giovanni La Forgia; Emanuele Organelli
发表月份Publication month: 2026-06 2026-06
Frontiers in Marine Science · DOI: 10.3389/fmars.2026.1822929
关键词Tags: BGC-Argo; phytoplankton; ocean colour; bio-optics BGC-Argo; phytoplankton; ocean colour; bio-optics
摘要：将叶绿素a浓度与光衰减和透光深度联系起来的表面生物光学关系被广泛应用于公海的海洋颜色应用中，但它们的全球性能仍然很少受到现有观测框架的限制。为了解决这一限制，我们根据案例 1 水域中配备多光谱辐射传感器和叶绿素 a 荧光计的生物地球化学-Argo (BGC-Argo) 浮标的全球分布数据集，对常用的表面生物光学关系进行了重新评估。我们表明，上 5 m 的平均表面叶绿素-a 浓度为各种辐射条件下第一光学深度内的叶绿素-a 提供了可靠的代理，支持其用作生物光学应用的一致表面变量。在此结果的基础上，评估了将表面叶绿素-a 与漫反射系数和透光深度联系起来的经验关系，发现其与已建立的全球经验模型大体一致，同时显示出案例 1 光学体系之间的明显差异。尽管全局改装模型解释了大部分总变异性，但系统偏差揭示了案例 1 水域内给定全局参数化的可转移性有限。事实上，特定于水类的参数化可以减少偏差，突出了在估计表面叶绿素-a 的光衰减和透光深度时考虑生物光学状态依赖性的重要性。这些结果为常用的表面生物光学模型提供了全球一致的、基于辐射测量的基准，并支持扩展的 BGC-Argo 阵列的进一步应用。
Abstract: Surface bio-optical relationships linking chlorophyll-a concentration to light attenuation and euphotic depth are widely used in ocean color applications across the open ocean, yet their global performance remains poorly constrained by existing observational frameworks. To address this limitation, we present a re-assessment of commonly used surface bio-optical relationships based on a globally distributed dataset from Biogeochemical-Argo (BGC-Argo) floats equipped with multispectral radiometric sensors and chlorophyll-a fluorometers in Case 1 waters. We show that surface chlorophyll-a concentration averaged over the upper 5 m provides a robust proxy for chlorophyll-a within the first optical depth across a wide range of radiometric conditions, supporting its use as a consistent surface variable for bio-optical applications. Building on this result, empirical relationships linking surface chlorophyll-a to diffuse attenuation coefficients and euphotic depth are evaluated and found to be broadly consistent with established global empirical models, while showing clear differences across Case 1 optical regimes. Although globally refitted models explain much of the total variability, systematic biases reveal the limited transferability of given global parameterizations within Case 1 waters. Indeed, water-class-specific parameterizations reduce bias, highlighting the importance of accounting for bio-optical regime dependence when estimating light attenuation and euphotic depth from surface chlorophyll-a. These results provide a globally consistent, radiometry-based benchmark for commonly used surface bio-optical models and support further applications across the expanding BGC-Argo array.
重点关注团队Focused team
2. Warm Current Intensification Altered Phytoplankton Communities in the Yellow Sea: Insights from Sedimentary Ancient DNA Metabarcoding
作者Authors: Haoyuan Zhang; Yaping Wang; Huiwen Deng; Linxuan Li; Dongyan Liu; Meixun Zhao; Jun Gong
发表月份Publication month: 2026-06 2026-06
ISME Communications · DOI: 10.1093/ismeco/ycag172
关键词Tags: phytoplankton phytoplankton
摘要：浮游植物群落的长期变化是理解和预测生态系统对气候驱动的环流变化的反应的关键。通过分析黄海两个沉积岩芯的沉积古DNA，我们重建了黄海暖流（YSWC）增强期间全新世中晚期浮游植物的动态。我们发现浮游植物群落在不同地点之间存在显着差异，真核生物的空间分化比蓝细菌更强。甲藻和叶绿藻总体上占主导地位，而网藻纲（硅鞭藻）相对于硅藻则出乎意料地丰富。系统发育重建恢复了以拟藻属为主的不同网藻纲谱系（2目，6属），表明区域多样性比之前认识的要大。蓝藻组合包括 SIO2C1、UCYN-A 和 PCC-6307 谱系。随着约 3 ka BP 以来 YSWC 的加强，真核生物群落结构在中央盆地发生了变化。 18S rRNA 基因丰度增加，而多样性和硅化物与甲藻的比率下降。尽管岩心 B07 的绝对年龄仍处于暂定状态，但在 100 cmbsf 左右的锋区发生了明显的地层更替，从叶绿素主导转向甲藻主导，这与淡水影响的减少和 YSWC 影响的增强相一致。许多指示物种在这些转变之前和之后表现出对比鲜明的丰度模式。这些发现证明了沿海浮游植物对环流驱动的状况变化的敏感性。
Abstract: Long-term changes in phytoplankton communities are key to understanding and predicting ecosystem responses to climate-driven circulation change. By analyzing sedimentary ancient DNA from two sediment cores in the Yellow Sea, we reconstructed mid-late Holocene phytoplankton dynamics during the intensification of the Yellow Sea Warm Current (YSWC). We found that phytoplankton communities differed significantly between sites, with stronger spatial differentiation in eukaryotes than in cyanobacteria. Dinoflagellates and chlorophytes dominated overall, while Dictyochophyceae (silicoflagellates) were unexpectedly abundant relative to diatoms. Phylogenetic reconstruction recovered diverse Dictyochophyceae lineages (2 orders, 6 genera) dominated by Pseudopedinella, indicating greater regional diversity than previously recognized. The cyanobacterial assemblages comprised SIO2C1, UCYN-A and PCC-6307 lineages. Following the intensification of the YSWC since ~3 ka BP, eukaryotic community structure shifted in the central basin. 18S rRNA gene abundance increased, whereas diversity and silicifier-to-dinoflagellate ratios declined. Although the absolute age of core B07 remains tentative, a pronounced stratigraphic turnover occurred in the frontal zone around 100 cmbsf, with a shift from chlorophyte to dinoflagellate dominance, consistent with reduced freshwater influence and an enhanced YSWC impact. Numerous indicator species exhibited contrasting abundance patterns before and after these transitions. These findings demonstrate the sensitivity of coastal phytoplankton to circulation-driven regime shifts.
3. The Fracability Evaluation of Deep Coal Reservoirs in the Ordos Basin Based on Well Logging and Rock Mechanics Experiments
作者Authors: Guoxiao Zhou; Zheng Zhang; Yanqing Wang; Wenguang Tian; Ze Deng; Hao Chen; Xianlin Wu; Jian Shen
发表月份Publication month: 2026-06 2026-06
Applied Sciences · DOI: 10.3390/app16126084
关键词Tags: vertical structure vertical structure
摘要：鄂尔多斯盆地深层煤层气资源丰富，其高效开发很大程度上依赖于大规模体积压裂技术的有效实施。为综合评价该盆地深层煤储层可压裂性，以本溪组8号煤层为研究对象。基于岩石力学实验和测井数据，建立多元线性回归模型来预测杨氏模量（E）和泊松比（μ）。应用Huang模型确定了煤层的三个主地应力。此外，综合脆性指数（BI）、水平应力差（Δσh）和抗拉强度（St）三个关键指标，构建了综合可压裂性评价模型。采用熵值评价法确定各指标的权重，计算出深层煤储层的可压裂指数（F）。结果表明，控制可压裂性的因素权重依次递减：抗拉强度（0. 332）、水平应力差（0. 8），盆地南北地区煤层，包括大宁—蓟县、神府、郏县、榆林北部和延川南部地区，可压裂性相对较好，而柳林北部和榆林南部则可压裂性较差。此外，可压裂指数呈现明显的正相关关系。根据这种关系，将深层煤储层分为三类：Ⅰ类储层（F > 0. 55），具有高可压裂性和高生产潜力； 55），具有中等可压裂性和中等生产潜力；和Ⅲ类水库（F
Abstract: The Ordos Basin contains abundant deep coalbed methane (CBM) resources, whose efficient development largely depends on the effective implementation of large-scale volumetric fracturing technologies. To comprehensively evaluate the fracability of deep coal reservoirs in this basin, this study focuses on the No. 8 coal seam of the Benxi Formation. Based on rock mechanical experiments and well-logging data, multivariate linear regression models were established to predict Young’s modulus (E) and Poisson’s ratio (μ). The Huang model was applied to determine the three principal in situ stresses of the coal seam. Furthermore, a comprehensive fracability evaluation model was constructed by integrating three key indicators, namely brittleness index (BI), horizontal stress difference (Δσh), and tensile strength (St). The entropy evaluation method was used to determine the weights of these indicators, and the fracability index (F) of deep coal reservoirs was calculated. The results show that the weights of the factors controlling fracability decrease in the following order: tensile strength (0.434), brittleness index (0.332), and horizontal stress difference (0.234). The No. 8 coal seam in the northern and southern parts of the basin, including the Daning–Jixian, Shenfu, Jiaxian, northern Yulin, and southern Yanchuan areas, exhibits relatively favorable fracability, whereas northern Liulin and southern Yulin show comparatively poor fracability. In addition, the fracability index shows a clear positive correlation with the peak gas production of vertical CBM wells. Based on this relationship, the deep coal reservoirs were classified into three categories: Class I reservoirs (F > 0.55), characterized by high fracability and high production potential; Class II reservoirs (0.50 ≤ F ≤ 0.55), characterized by moderate fracability and moderate production potential; and Class III reservoirs (F
其他相关期刊：按主题相关性补充Other relevant journals: topical supplements
4. Marine Heatwave Trends in Eastern North America Waters Using a High‐Resolution (5‐km) SST Dataset
作者Authors: Samantha E. Stone; Shawn M. Milrad
发表月份Publication month: 2026-06 2026-06
International Journal of Climatology · DOI: 10.1002/joc.70474
关键词Tags: marine heatwaves marine heatwaves
摘要：海洋热浪 (MHW) 是持续的极端海面温度 (SST) 时期，其范围延伸很远，对海洋生态系统和经济产生巨大影响。本研究使用高分辨率（5公里）NOAA珊瑚礁观察（CRW）数据集研究了北美东部附近的亚热带和热带水域的海表温度和最高水温趋势（1985-2024年），该数据集可以阐明公海和较浅的沿海水域的趋势。结果显示，在所有暖季月份（5 月至 10 月），MHW 频率（每十年 > 2. 0 天）和空间范围（自 1985 年以来扩大了 25%–45%）普遍大幅且具有统计意义的显着增加。大频率和持续时间趋势在 9 月和 10 月尤其普遍；强度趋势不太明显，但七月和八月佛罗里达州附近以及十月整个加勒比海地区的强度趋势很明显。虽然频率和持续时间趋势模式密切相关，但两者都不像强度趋势模式，尤其是在 10 月之前。应用现有的 MHW 强度等级来分析趋势，I 类（“中等”；气候日平均海表温度与每日第 90 个百分位数海表温度之间差异的一到两倍）MHW 的频率增加最为显着。然而，在过去十年中，II 类（‘强’；两到三倍的差异）和 III 类（‘严重’；三到四倍的差异）MHW 也变得更加常见。例如，2023-2024 年 II 类 MHW 的频率超过 2023 年之前除 1 年（2005 年）以外的 I 类频率。MHW 频率和强度受 ENSO 调节，峰值优先出现在厄尔尼诺事件（12 月至 3 月）之后的温暖季节。 总体而言，结果支持模型预测到 21 世纪末将出现近乎永久的暖季 MHW 状态。
Abstract: Marine heatwaves (MHWs) are periods of persistent extreme sea surface temperatures (SSTs) that extend over vast distances and have enormous impacts on marine ecosystems and economies. This study examines SST and MHW trends (1985–2024) in the subtropical and tropical waters adjacent to eastern North America, using the high‐resolution (5 km) NOAA Coral Reef Watch (CRW) dataset, which can elucidate trends both in the open ocean and more shallow coastal waters. Results show widespread large and statistically significant increases in MHW frequency (> 2.0 MHWs per decade), duration (> 2.0 days per decade), and spatial extent (25%–45% larger since 1985) in all warm‐season months (May–October). Large frequency and duration trends are especially widespread in September and October; intensity trends are less pronounced but are notable near Florida in July and August and in October across the Caribbean. While frequency and duration trend patterns are strongly correlated, neither resembles intensity trend patterns, especially before October. Applying an existing MHW intensity scale to analyse trends, the frequency of Category I (‘Moderate’; one to two times the difference between the climatological daily mean SST and the daily 90th percentile SST) MHWs has increased most dramatically. However, Category II (‘Strong’; two to three times the difference) and III (‘Severe’; three to four times the difference) MHWs have also become more common during the past decade. For example, the frequency of Category II MHWs in 2023–2024 exceeds all but 1 year (2005) of Category I frequency before 2023. MHW frequency and intensity are modulated by ENSO, with peaks preferentially occurring during warm seasons that follow (December–March) El Niño events. Overall, results support model projections of a near‐perpetual warm‐season MHW state by the end of the 21st century.
5. Dinoflagellate responses to nutrients and mangrove leaf organic matter in the bioluminescent Mangrove Lagoon, St. Croix, U.S. Virgin Islands
作者Authors: James L. Pinckney; Michelle Zimberlin; Dianne I. Greenfield
发表月份Publication month: 2026-06 2026-06
Journal of Phycology · DOI: 10.1111/jpy.70189
关键词Tags: phytoplankton phytoplankton
摘要：生物发光海湾（biobays）是一种罕见的沿海生态系统，具有密集的甲藻种群，通常发现于红树林环礁湖中，具有较长的保水时间和较高的有机质（OM）水平。尽管红树林与高甲藻丰度相关，但在塑造浮游植物群落方面，无机养分与红树林衍生的有机物质相比如何仍不确定。我们在圣维尔京群岛红树林泻湖进行了短期原位生物测定，以比较浮游植物群落对添加无机养分（N 和 P）和衰老红树林叶子的反应。使用高效液相色谱 (HPLC) 色素分析结合 CHEMTAX 评估浮游植物组成，并使用成分和中心对数比主成分分析 (CLR-PCA) 分析数据。营养物添加主要增加了浮游植物总生物量，有利于以硅藻为主的群落，与氮限制一致，但没有显着改变群落组成。相反，添加衰老的红树林叶子始终使群落转向含有多甲素的甲藻丰度更高，而不会显着增加其他浮游植物群的丰度。多变量分析表明，叶子的添加使群落沿着连续的组成谱变化，而不是创造不同的组合。这些发现表明，来自衰老红树林叶子的 OM（渗滤液），而不是单独的无机氮和磷富集，是促进红树林泻湖中甲藻优势的合理机制。 我们的结果强调了红树林 OM 输入在维持一些热带泻湖中以甲藻为主的环境中的潜在作用，证明了红树林可以调节邻近水域浮游植物群落组成的机制。
Abstract: Bioluminescent bays (biobays) are uncommon coastal ecosystems featuring dense populations of dinoflagellates, often found in mangrove‐ringed lagoons with long water retention times and high organic matter (OM) levels. Although mangroves are associated with high dinoflagellate abundance, it remains uncertain how inorganic nutrients compare with mangrove‐derived organic matter in shaping phytoplankton communities. We performed short‐term in situ bioassays in Mangrove Lagoon, St. Croix, U.S. Virgin Islands, to compare phytoplankton community responses to additions of inorganic nutrients (N and P) and senescent mangrove leaf additions. Phytoplankton composition was assessed using high‐performance liquid chromatography (HPLC) pigment analysis combined with CHEMTAX, and data were analyzed with compositional and centered log‐ratio principal component analyses (CLR–PCAs). Nutrient additions primarily increased total phytoplankton biomass and favored diatom‐dominated communities, consistent with N limitation, but did not significantly alter community composition. Conversely, adding senescent mangrove leaves consistently shifted the community toward higher abundances of peridinin‐containing dinoflagellates, without significantly increasing the abundance of other phytoplankton groups. Multivariate analysis showed that leaf additions shifted the community along a continuous compositional spectrum rather than creating distinct assemblages. These findings suggest that OM (leachate) from senescent mangrove leaves, rather than inorganic N and P enrichment alone, is a plausible mechanism for promoting dinoflagellate dominance in Mangrove Lagoon. Our results underscore the potential role of mangrove OM input in sustaining dinoflagellate‐dominated environments in some tropical lagoons, demonstrating a mechanism by which mangroves may regulate phytoplankton community composition in adjacent waters.
